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Finding the Fourth Proportional to 8,938.92, 13,348.16 and 7,298.66

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Solution

The fourth proportional to 8,938.92, 13,348.16 and 7,298.66 is: 10,898.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.92 : 13,348.16 = 7,298.66 : x
  2. Step 2: Convert to fraction form
    8,938.92/13,348.16 = 7,298.66/x
  3. Step 3: Cross multiply
    8,938.92x = 13,348.16 × 7,298.66
  4. Step 4: Simplify right side
    8,938.92x = 97,423,681.47
  5. Step 5: Solve for x
    x = 97,423,681.47/8,938.92
  6. Step 6: Final answer
    x = 10,898.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.